package study;

import java.util.Scanner;

public class Backouput {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();
        char[] a = s.toCharArray();
        for (int i=s.length()-1;i>=0;i--){
            System.out.print(a[i]);
        }
    }
}
